Fishes are the good source of aquatic food that provides nutrients and gives nourishment to the human`s body and promotes growth. This study was carried out to determine the prevalence of monogenean ectoparasites on fresh water Indian major carps inhabited in the cultured ponds and natural ponds lakes and river of district Sultanpur, Uttar Pradesh, India, in a bid to suggesting ways of curbing them. Total 360 fishes were examined from cultured fish ponds consisting of 120 Bhakur (Catla catla), 120 Rohu (Labeo rohita) and 120 Mrigal (Cirrhinus mrigala) and 360 fishes from natural water bodies such as ponds, pools, lakes and river also consisting of 120 Bhakur (Catla catla), 120 Rohu (Labeo rohita) and 120 Mrigal (Cirrhinus mrigala). Higher infestations were recorded in cultured fish farm in rainy season whereas, in natural water bodies in summer season. The higher monogenean infestation was recorded in Indian major carp Bhakur (Catla catla) in both natural as well as cultured fish farm. The captive fishes are more infested in rainy season due to high pollution load but the fishes inhabited in natural water bodies are highly infested in summer season, when water level falls and fishes come in contact with each other. Prevention of monogenean ectoparasites infestation by given appropriate quarantine is preferable to treatment of the parasites after they have become established in a system. Administration of praziquantel and hydrogen peroxide should be used for the removal of monogenean ectoparasites and prevents the Indian major carps from infestation of monogenean ectoparasites. In present study, the larger fishes recorded higher infestation than smaller ones. Therefore, routine checkup of physico-chemical parameters, water level, fish density and monitoring of parasitic status of fishes would reduce the mortality and loss in fish production.
Infestations, Indian major carps, Monogenean-ectoparasites, Sultanpur
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